The built-in OS on smart TVs almost always sucks. The built-in OS on our LG is slower, has less apps, and has less support for HDR and higher resolutions than our Fire stick.
Just don't use it and instead plug in a Fire stick, turn off its tracking, then sideload apps like BeeTV and HDO Box.
I know Amazon has a bad rep from a privacy standpoint but the Fire stick is super cheap compared to its competition and lets you turn off the tracking in one page of the settings menu.
You can buy any TV. Just turn off the tracking in the settings and plug in a streaming stick.